[Elecraft] K3 bad TX

[AD6XY]

Just to demonstrate that the K3 TX spectrum is excellent, I have uploaded
some plots to flickr

starting at 
http://www:.flickr.com/photos/ad6xy/3980006295/

with the ones between up to

http://www.flickr.com/photos/ad6xy/3980007573/

showing the close in spectrum at 100W output on 14.2 MHz for a CW tone - it
has no obvious spurii except those close to the carrier above -90dBc. The
close in plot shows the usual 50Hz mains spurs plus some at 400Hz but even
these are 60 dB down. I am not sure if the K3 is better than the analyser.

I did some 2-tone tests to see if it could be that, they are in the
following 4 pictures but again, there is nothing wrong and indeed the
results are rather good for a 12V PA. It is interesting the K3 is cleaner
close in at 50W than at 10W. That is because of the bypassing of the PA
below 12W. I thought this had been corrected to 10W when the big PA was
limited to 100W but not so.

Mike
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